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It was launched atop an Ariane 5-ECA rocket at 22:06 UTC on November 14, 2007. This launch had previously been delayed from November 9 due to a problem with the rocket, and then from November 12 due to a problem with the launch pad. Star One C1 was built by Thales Alenia Space based on a Spacebus 3000 B3 platform. It has 28 C-band transponders, 14 Ku-band transponders and one X-band transponder, and weighed about 4,100 kilograms (9,000 lb) at launch.[2]